Finding the Third Proportional to 31,406.25 and 42,647.25

Step by Step Solution

1. Step 1: Write the proportion equation
   31,406.25 : 42,647.25 = 42,647.25 : x
2. Step 2: Convert to fraction form
   31,406.25/42,647.25 = 42,647.25/x
3. Step 3: Cross multiply
   31,406.25x = 42,647.25 × 42,647.25
4. Step 4: Simplify right side
   31,406.25x = 1,818,787,932.56
5. Step 5: Solve for x
   x = 1,818,787,932.56/31,406.25
6. Step 6: Final answer
   x = 57,911.66